The Spring Valley neighborhood was an American University experiment station during World War I. The list of recovered munitions was made public Monday as part of an approximately 40-page report on cleanup options. It had been previously closed under a security order.

The list includes three different chemicals -- arsine, mustard and lewisite. Arsine is used in the metals refining industries, according to the report; mustard and lewisite are both blistering agents. Also recovered were various projectiles with shrapnel or other contents.